I got a '99 Chevy 2500(new body style). When you put it reverse you here a clunk/clank noise. The truck has 60,000 miles on it. Took it to the dealer, mechanic said he sees alot of 3/4 ton Chevy trucks with that noise. Said most likely its backlash/slop in the rear end from heavy use/snow plowing and that its normal. he said that he wouldn't worry about it until it started growling. My question is does anyone else have this problem with their Chevy 3/4 ton pickups? truck shifts good and makes no other noises, just when you go from drive to reverse.